Thomas p



(N0 ModeL) T. P. HOGAN.

STEAM HEATING BOILER.

Eatented Sept. 29, 1885.

UNITED STATES ATENT OFFICE.

THOMAS P. HOGAN, OF BUFFALO, NEWV YORK.

STEAM-HEATING BOILER.

SPECIFICATION forming part of Letters Patent No. 326,982, datedSeptember 29, 1885.

Application filed December 3, 1884. (No model.)

I 0 all whom it may concern;

Be it known that I, THOMAS P. HOGAN, a citizen of the United States,residing in Buffalo, in the county of Erie and State of New York, haveinvented certain new and useful.

Improvements in Steam-Heating Boilers, of which the following is aspecification.

The object of this invention is to produce a cheaply constructed,efficient, and durable sectional steam heating boiler for heatingbuildings or other purposes, all of which will be fully and clearlyhereinafter shown by reference to the accompanying drawirgs, in which--Figure 1 is a vertical central section online X X, Fig. 2, through thecomplete boiler; and Fig. 3 is a horizontal section through line Z Z,Fig. 1.

This boiler consists of a series of annular water-sections, ctr/a butthere may be more or less than the number of sections shown. One of thesections is provided with a series of downwardly-projecting hollowportions, (1 They are constructed so as to project down into the fire inthe furnace, and are provided with projections a, to receive the lowerend of the magazine a The magazinecover c is made in the ordinary way.

0 is the base of the boiler, made in the usual manner, and is providedwith an ash-pan of any wellknown construction. The furnace is alsoprovided with the ordinary circular tipping or dumping grate, c

Each of the annular water-vessels is provided with anoutwardly-projecting hollow portion, having holes 0, through which thebolts 0 pass and secure the whole together, and to each of which hingese are secured for holding the doors 6, which form the inner casing. Theobject of the doors 0 is to provide the means for opening out the insidecase, (after the outer case, 6', by opening the two halves e, which arehinged together by ahinge, 6", has been taken off,) so that all theparts may be readily got at and cleaned, thereby providing a convenientmeans for taking out the soot, ashes, or dirt, that may gather duringthe operation of the furnace. These doors 6 are secured, when closed, byan ordinary latch, 6*, or by any other well-known means. In operatingwith this boiler the products of combustion take the course of thearrows f first up through the furnace, then down through the flue, theninto the outer flue, and up and out through the pipe. The arrowsf showthe way in which the water circulatesin the boiler.

I claim as my invention- 1. A steam-heating boiler consisting of aseries of annular Water-sections, each section being provided withoutwardly projecting hollow portions c having holes through which thebolts pass for securing the whole together, the upper section beingprovided with tubes formed in one piece wit-h it, and which passvertically downward between the water-sections and the magazine belowthe top of the lower water-section which forms the fire-box, as and forthe purposes described.

2. A steam-heating boiler having the inner jacket composed of a seriesof doors, 6, secured by hinges to the portion 0 of the watersections, incombination with the outerjacket, 6 whereby all the fines may be readilygot at, as described.

THOMAS P. HOGAN.

\Vitnesses:

J ENNIE M. CALDWELL, JAMES SANGSTER.

